Generally speaking, dreams are subconscious reminders to correctly handle the balance of life, work or other aspects.
It's just that the description of the dream is not specific enough, and there is no detailed explanation of several basic elements that make up the dream, such as going to work, what kind of things to do, business or private affairs. What kind of car, bus or private car, etc. And I didn't explain my own situation, such as age, living condition and working condition. So there is no way to analyze the dream more "personalized" and more suitable for my situation.
If you can't find a car in this kind of sleep, you will miss the time to do things. In this dream, you don't feel fear, but you feel frustration more deeply. Then this kind of dream usually happens when you feel that you have missed an important opportunity in real life, which often happens when people are trying to make important decisions.